JRC JFE-400 Manual de usuario

Echo Sounder

INSTRUCTION

MANUAL

Safety Cautions

Safety Cautions 

Cautions for High Voltage

High voltages, ranging from several hundreds to tens of thousands of volts, are used in

electronic apparatus, such as radio and radar instruments. These voltages are totally harmless in

most operations. However, touching a component inside the unit is very dangerous. (Any person

other than authorized service engineers should not maintain, inspect, or adjust the unit.)

High voltages on the order of tens of thousand volts are most likely to cause instant deaths from

electrical shocks. At times, even voltages on the order of several hundred volts could lead to

electrocution. To defend against electrical shock hazards, don't put your hand into the inside of

apparatus.

When you put in a hand unavoidably in case of urgent, it is strongly suggested to turn off the

power switch and allow the capacitors, etc. to discharge with a wire having its one end positively

grounded to remove residual charges. Before you put your hand into the inside of apparatus,

make sure that internal parts are no longer charged. Extra protection is ensured by wearing dry

cotton gloves at this time. Another important precaution to observe is to keep one hand in your

pocket at a time, instead of using both hands at the same time. It is also important to select a

secure footing to work on, as the secondary effects of electrical shock hazards can be more

serious. In the event of electrical shocks, disinfect the burnt site completely and obtain medical

care immediately.

Precautions for Rescue of Victim

of Electric Shock

When a victim of electric shock is found, turn off the power source and ground the circuit

immediately. If this is impossible, move the victim away from the unit as quick as possible without

touching him or her with bare hands. He or she can safely be moved if an insulating material

such as dry wood plate or cloth is used.

It is necessary to perform first aid immediately.

Breathing may stop if current flows through the respiration center of brain due to electric shock. If

the electric shock is not large, breathing can be restored by artificial respiration. A victim of

electric shock looks pale and his or her pulse may become very weak or stop, resulting in

unconsciousness and rigidity at worst.

First Aid Method

Emergency Measures 

Method of First-Aid Treatment

Precautions for First-Aid Treatments

Apply artificial respiration to the person who collapsed, minimizing moving as much as

possible avoiding risks. Once started, artificial respiration should be continued rhythmically.

(1) Refrain from touching the patient carelessly as a resultof the accident; the first-aider

could suffer from electrical shocks by himself or herself.

(2) Turn off the power calmly and certainly, and move the patient apart from the cable

gently.

(3) Call or send for a physician or ambulance immediately, or ask someone to call doctor.

(4) Lay the patient on the back, loosening the necktie, clothes, belts and so on.

(5) (a) Feel the patient's pulse.

(b) Check the heartbeat by bringing your ear close to the patient's heart.

face.

(d) Check the size of patient's pupils.

(6) Opening the patient's mouth, remove artificial teeth, cigarettes, chewing gum, etc. if

any. With the patient's mouth open, stretch the tongue and insert a towel or the like into

the mouth to prevent the tongue from being withdrawn into the throat. (If the patient

clenches the teeth so tight that the mouth won't open, use a screwdriver or the like to

force the mouth open and then insert a towel or the like into the mouth.)

(7) Wipe off the mouth to prevent foaming mucus and saliva from accumulating.

Safety Cautions

iii

Treatment to Give When the Patient Has a

Pulse Beating but Has Ceased to Breathe

Performing mouth-to-mouth artificial respiration

(1) Bend the patient's face backward until it is directed to look back. (A pillow may be

placed under the neck.)

(2) Pull up the lower jaw to open up the airway. (To spread the airway)

(3) Pinching the patient's nose, breathe deeply and blow your breath into the patient's

mouth strongly, with care to close it completely. Then, move your mouth away and

take a deep breath, and blow into his or her mouth. Repeat blowing at 10 to 15 times

a minute (always with the patient's nostrils closed).

(4) Continue artificial respiration until natural respiration is restored.

(5) If the patient's mouth won't open easily, insert a pipe, such as one made of rubber or

vinyl, into either nostril. Then, take a deep breath and blow into the nostril through

the pipe, with the other nostril and the mouth completely closed.

(6) The patient may stand up abruptly upon recovering consciousness. Keep the patient

lying calmly, giving him or her coffee, tea or any other hot drink (but not alcoholic

drink) to keep him or her warm.

Mouth-to-mouth artificial respiration with the patient's head lifted

[1]

(1) Lift the back part of the patient's

head. Support the forehead with one

of your hand and the neck with the

other hand.[1].

Many patients will have their airways

opened by lifting their head in this

way to ease mouth-to-mouth

artificial respiration.

[2]

(2) Closing the patient's mouth with your

mouth, press your cheek against the

patient's nose[2].

Alternatively, hold the patient's nose

with your finger to prevent air leak

[3].

[3]

(3) Blowing air into the patient's lungs.

Blow air into the patient's lungs until

chest is seen to rise. The first 10

breaths must be blown as fast as

possible.

Fig. 1 Mouth-to-mouth artificial respiration

First Aid Method

Flow of Cardiopulmonary Resuscitation (CPR)

A person is collapsing.

- Secure the safety of the surrounding area.

- Prevent secondar

disasters.

Check for response.

- Call while tapping the shoulder.

Breathing

Recovery position

- Lay the injured or

ill person on

his/her side and

wait for the arrival

of the emergency

services.

Not responding or indeterminate state

Ask for help.

- Make an emergency call.

- Ask to bring an AED.

Listen to the appeal of the

injured or ill person and give

the necessary first-aid

Responding

Chest compressions

- With each compression, depress the chest

wall to a depth of approximately 5 cm.

- Perform compressions at the rate of 100 -

120 times per minute.

Combination of chest compressions and

rescue breaths Note(1)

- If the first-aider is not trained in rescue

breaths, he/she should perform only chest

compressions. See Note(1) for the details.

Note(1) Combination of chest compressions and

rescue breaths

- If the first-aider is not trained in rescue breaths,

he/she should perform only chest compressions.

- If the first-aider is trained in rescue breath, and has

the skill and will to do it, he/she should perform the

combination of chest compressions and rescue

breaths at the ratio of 30:2. If there is a fear of

infection, he/she should use a personal protective

equipment (mouthpiece for rescue breathing).

Check for breathing and judge cardiac arrest.

- Check for breathing.

Arrival of an AED

- Turn on the power.

- Use the AED by following its voice prompts.

Fitting of the electrode pads, etc.

Automatic electrocardiogram

analysis

- Do not touch the injured or ill

person.

Electric shock is needed.

Electric shock is not needed.

Delivery of electric shock

Resume CPR from chest

compressions by following the

voice prompts of the AED.

When the injured or ill

person has been

handed over to the

emergency services or

has started moaning or

breathing normally, lay

him/her on his/her side

in a recovery position

and wait for the arrival

of emergency services.

When to

stop CPR

A person is collapsing.

- Secure the safety of the surrounding area.

- Prevent secondar

disasters.

The AED

automatically

analyzes the

heart rhythm

every 2 min.

If you call an ambulance, you can get instructions regarding

how to judge cardiac arrest and how to do cardiopulmonary

resuscitation (CPR).

Not breathing or indeterminate state

First Aid Method

Specific Procedures for Cardiopulmonary Resuscitation (CPR)

1. Check the scene for safety to prevent secondary disasters

a) Do not touch the injured or ill person in panic when an accident has occurred. (Doing so may

cause electric shock to the first-aiders.)

b) Do not panic and be sure to turn off the power. Then, gently move the injured or ill person to a

safe place away from the electrical circuit.

2. Check for responsiveness

a) Tap the shoulder of the injured or ill and shout in the ear saying,

"Are you OK?"

b) If the person opens his/her eyes or there is some response or

gesture, determine it as "responding." But, if there is no response

or gesture, determine it as "not responding."

3. If responding

a) Give first-aid treatment.

4. If not responding

a) Ask for help loudly. Ask somebody to make an emergency call

and bring an AED.

• Somebody has collapsed. Please help.

• Please call an ambulance.

• Please bring an AED.

• If there is nobody to help, call an ambulance yourself.

5. Check for breathing

a) Look to see if the chest and abdomen of the injured or ill person are rising and falling.

b) If the injured or ill person is breathing, place him/her in the recovery position and wait for the

arrival of the emergency services.

• Position the injured or ill person on his/her side.

Are you OK?

Please call an

ambulance.

Please bring an AED.

First Aid Method

6. Cardiopulmonary resuscitation (CPR) (combination of chest compressions and

rescue breaths)

a) Chest compressions

1) Position of chest compressions

• Position the heel of one hand in the center of the chest, approximately between the nipples,

and place your other hand on top of the one that is in position.

2) Perform chest compressions

Perform uninterrupted chest compressions of

30 at the rate of about 100 - 120 times per

minute, while locking your elbows positioning

yourself vertically above your hands.

• With each compression, depress the chest wall to a depth of approximately 5 cm.

b) Combination of 30 chest compressions and 2 rescue breaths

1) If the first-aider is not trained in rescue breaths, he/she should perform only chest

compressions.

2) If the first-aider is trained in rescue breath, and has the skill and will to do it, he/she should

perform 30 chest compressions, then give 2 rescue breaths.

3) If there is a fear of infection, he/she should use a personal protective equipment

(mouthpiece for rescue breathing).

4）Continuously perform the combination of 30 chest compressions and 2 rescue breaths

without interruption.

5) If there are two or more first-aiders, alternate with each other approximately every two

minutes (five cycles) without interruption.

Compress

with these

parts (the

heels of

both

hands).

30 times

2 times

CPR mask

Mouthpiece for rescue

First Aid Method

vii

7. When to stop cardiopulmonary resuscitation (CPR)

a) When the injured or ill person has been handed over to the

emergency services

b) When the injured or ill person has started moaning or breathing

normally, lay him/her on his/her side in a recovery position and wait

for the arrival of emergency services.

8. Arrival and preparation of an AED

a) Place the AED at an easy-to-use position.

If there are multiple first-aiders, continue

CPR until the AED becomes ready.

b) Turn on the power to the AED unit.

Depending on the model of the AED, you

may have to push the power on button, or

the AED automatically turns on when you

open the cover.

c) Follow the voice prompts of the AED.

9. Attach the electrode pads to the injured or ill person's bare chest

a) Remove all clothing from the chest, abdomen, and arms.

b) Open the package of electrode pads, peel the pads off and securely

place them on the chest of the injured or ill person, with the adhesive

side facing the chest. If the pads are not securely attached to the chest,

the AED may not function. Paste the pads exactly at the positions

indicated on the pads, If the chest is wet with water, wipe dry with a dry

towel and the like, and then paste the pads. If there is a pacemaker or

implantable cardioverter defibrillator (ICD), paste the pads at least 3

cm away from them. If a medical patch or plaster is present, peel it off and

then paste the pads. If the injured or ill person's chest hair is thick,

paste the pads on the chest hair once, peel them off to remove the

chest hair, and then paste new pads.

c) Some AED models require to connect a connector by following voice prompts.

d) The electrode pads for small children should not be used for children over the age of 8 and for

adults.

10. Electrocardiogram analysis

a) The AED automatically analyzes electrocardiograms. Follow the

voice prompts of the AED and ensure that nobody is touching the

injured or ill person while you are operating the AED.

b) On some AED models, you may need to push a button to analyze

the heart rhythm.

Turn on the power.

First Aid Method

viii

11. Electric shock (defibrillation)

a) If the AED determines that electric shock is needed, the voice

prompt saying, "Shock is needed" is issued and charging starts

automatically.

b) When charging is completed, the voice prompt saying, "Press the

shock button" is issued and the shock button flashes.

c) The first-aider must get away from the injured or ill person, make

sure that no one is touching him/her, and then press the shock

button.

d) When electric shock is delivered, the body of the injured or ill person may jerk.

12. Resurgence of cardiopulmonary resuscitation (CPR)

a) Resume chest compressions by following the voice prompts of the AED.

• With each compression, depress the chest wall to a depth of

approximately 5 cm.

• Perform compressions at the rate of 100 - 120 times per minute.

13. Automatic electrocardiogram analysis

a) When 2 minutes have elapsed since you resumed cardiopulmonary resuscitation (CPR), the

AED automatically analyzes the electrocardiogram.

b) If you suspended CPR by following voice prompts and AED voice prompt informs you that

shock is needed, give electric shock again by following the voice prompts.

If AED voice prompt informs you that no shock is needed, immediately resume CPR.

14. When to stop CPR (Keep the electrode pads on.)

a) When the injured or ill person has been handed over to the emergency services

b) When the injured or ill person has started moaning or breathing normally, lay him/her on his/her

side in a recovery position and wait for the arrival of emergency services.

Press the shock button.

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